Tractor



A. E. SCHAAF AND S. W. MILLS.

TRACTOR.

APPLxcATloN FILED Nov. 2e, 1917.

Patented June 8, 192()a 314mm tow 2 SHEETSvSYHEET l.

A. E. SCHAAF AND S. W. MILLS.

TRACTOR. .j

APPLICATION FILED Nov. 26, I9I7.

y1 ,342,764. Patented June 8, 192B.

2 SHEETS-SHEET 2.

/ttowew I UNITED STATES PATENT QFFICE.

ALBERT E. SCHAAF AND STANLEY W. MILLS, OF INDIANA?OLIS, INDIANA.

TRACTOR.

Application filed. November 26, 191'?.

To all whom t may con fern Be it known that we, ALBERT E. Soiniiir, a citizen of the United States, residing at lndianapolis, Marion county, and State of ndiana, and STANLEY YV. MILLS, a citizen of the United States, residing at lndianapolis, Marion county, and State of ndiana, have invented and discovered certain new and useful improvements in Tractors, of which the following is a specification.

Our said invention relates to tractors, and consists in the combinations and arrangements of elements hereinafter described and particularly set forth in the accompanying claim.

The purpose of the invention is to provide a tractor having a single tractor wheel, whereby to centralize the tractive eifort of the whole tractor and thereby obtain its maximum draw-bar pull for hauling trucks or other heavy loads, and wherein the tractor-wheel, the motor, the operators seat, the steering head, and all controls therefor are assembled and disposed in a manner which will allow the operator all possible freedom, and enable his having the most ellicient control in all conditions under which the tractor may be used.

The invention has for its further purpose to construct a tractor of this type having the steering control, the seat for the operator, the tractor wheel, and the motor with transmission disposed in substantial alinement in the order named and in the direction of travel of the vehicle.

The present construction of tractor is proposed as an improvement on the types of tractors disclosed iii the co-peiiding application for U. S. patent, to wit: No. SSA-t9, filed March ll, 1916, for tractors.

The invention is disclosed by way of illustration in the accompanying drawings wherein- Figure l is a side elevational view of the tractor, and

Fig. 2 a top plan view of the same.

Referring to the construction in further detail and wherein like reference characters designate corresponding parts, the tractor embodies 'i chassis or frame consisting of a body portion 8 of channel-iron construction and rectangular design, and an annular section l is secured rigidly to the front portion of the frame 3 in any appropriate manner. The annular frame section 4 has mounted thereon a revoluble frame section 5 that sup- Speciiication of Letters Patent.

Patented Julie 8, 1920. Serial No. 204,025,

ports a super-iframe Gby the cross bars 7 and 8, and said suner-irame is in part rectangular, and has converging side portions 9,

as shown.

The supporting or super-frame G carries the tractor wheel l0, the motor ll, transmission l2, urif'iiig gearl, operators seat and the steering head as shown, and these element-s are anged to equally distribute their weights and with the steering control, the position for the operator, the tractor wheel, power transmission, and the engine in the order named, and disposed from the front to the rear of the chassis as shown.

The shaft 16 of the steering head l5 carries a pinion 17 engaging with an annular gear i8 secured to the annular frame section e (see Fig. l), and the usual transmission 'ontrol 19 and the brake and gear shiftino' pedals 2O are provided. o

The vehicle cover which incloses substantially all out the working parts consists of a body 2l suitably mounted on the sides of the super-frame structure G, and supporting a top LL which overlies the drivei"s seat and the steering head as shown.

The coupling device for connecting the tractor with the vehicle to be hauled consists of a rectangular frame 26 mounted on the axle supported b v wheels 25, and the springs 27 and having a' pair of cross ineinbers that support one member of :i fifth-wheel connection as shown.

The vehicle 30 to be hauled is preferably constructed with under-frame 3l having cross bars 32 and carrjv'ing the other ineiiiber -l of the fifth-whecl that pivotally couples with the member 29 bv the usual king bolt. l

ln the construction disclosed, the invention is characterized in that the whole tractive elfort is centralized at the one point of ground Contact to obtain the maximum draw-bar pull for hauling trucks and other heavy loads, and wherein the motive element, all controls, and the seat for the operator are arranged iii a manner giving complete control and a full survey of the tractor and its trailer whether the load be hauled straightaway, turned, or steered in any direction, or backed to the place for unloading.

lt is obvious that those skilled in the art may vary the details of construction and arrangement of parts without departing from the spirit of our invention, and there` fore We do not Wish to be limited to such features except as may be required by the claim.

Having thus described our said invention, what We claim as neiv and desire to secure by Letters Patent is:

In a tractor the combination of a frame, a revoluble section mounted in the frame, a single tractor Wheel journaled in the revoluble section, an operators seat and a steering control mounted on the revoluble section in advance of the tractor wheel, and a motor and transmission gearing mounted on the revoluble frame in the rear of the tractor Wheel and having driving connection therel5 with, all disposed in radial symmetry to the central vertical aXis through the tractor wheel and balanced along the longitudinal medial line of the frame, substantially as set forth.

In Witness whereof, We have hereunto set our hands and seals at Indianapolis, Indiana, this 16th day of November, A. D., nineteen hundred and seventeen.

ALBERT E. SCHAAF. [Ls] [Ls] Y STANLEY W. MILLb. Witness:

E. W. BRADFORD. 

